Pump assembly



Feb. 20, 1951 F E BRADY, JR 2,542,896

PUMP ASSEMBLY Filed Jan. 50, 1948 1N VEN TOR. fm/vc/ EER/7o( Je.

`Patented Feb. 20, `1951 UNITED "S TATHES 2,542396 @PMP ASSEMBLY tvFrancisa. Brady, .In-Munciet-Ind. hpmieetin ranuar-y so, iefia'isefiai Bittere (ol. lose- 87) 171Clam5. l invention relates `to rfa'n electrically 'pe'riibl'e fhyd'raulic type ipuiip of the semi-"submersiblelitype The chief object of the present inventioni's'ito eenstriuct'such a ustruct'ure -nf I but -fewlpart's the xiljrity iof IWhich ali-e1 ef i sheet "Ine-tal 7dlia'ta hnotlrerobjec't lof Sthefpreserit invention is fto Jconstructtne .mager :port-ions cntne1unit-isoLtnat ifsaid portions are freadily 'asse'mbled.

The chief feature fof the lple'sellt i'hvehtii fe- :isi es #in fthe substantial elimination .of aan rasa lh'g's'.

4`Other fbje'ts land features fof l'the invention rfwlibeset ferithimorefully/.hereinafter fheful'lnatur'f'e Tof `theinvention Willbe 'under- #stoodffrorn the accompanying drawings anu 'etna following `'ide'srz'i-iption and claims:

lnlthei-drawings l Fig. 31 'is a. Lcentral sectional 'view of the -structure y l Fig. 2 4isatop=rp1an'view ofi'tne intermediate h'o'usirg assembly.

Fi'g.--3 is i a -pe`rspective fview "If Ythe iinip'eller. In Fig-ilJ "Iii indicates lafsh'e'et metal `(brassfer brass 'fpl'ated) half 'of fa purln'p housing #.cetfaltvellportion Y `I AHcofrlini'llniGates a scroll type discharge IZITlermnatin'gii/n outi'e't chamber `|3,1said'flrali lhousing being formed with a peripheral laterally-extending flange I4 and a central intalefopenirfg I5.

5A @complementary plate :port-ion -IS includes central collar I1, scrolllike portion I8\periphe`ral flange I9, and outlet chamber 2). Rigid with the upper plate 'is "an outlet 'iixtur'e 2| "having `internally threaded bore 22 'Jior hose or pi e licn Aplate 2 9 has stamped y'therefrom the van-es 'A's :shown in If-ig. :3, 'the integral rsta'mpfedfoat *bladesfareFbent;outwardlyffromthesprater2emem- '-prising' an iannular Fdisk, Within .the :peripheral y"edge thereof so `as to leave "a surrounding frerin'fo'rciirg rim. vEaclfi `blade is fcut from a Fdevveloped curve in Vthe plate tand bent 'at fright 'angles theretoabont a 'curve so `related "to 'the 1'developed'curvethat=the kface of the bladefwillbe --curved from'the rinner to the r"outer end thereof *with the exposed cut 'edge iextending in e. lplane parallel to lthe plate. Thus,with the stamped- `:out integral'blades bent at *right angles to :the `pl'ate therewill bejprovi'ded'a lconvex leadin'grfa'ce -and `-a concave trailing 'face `The upper `end of 'tube -23 `may be 'apertured Yas #at 424a. Cup '33, of sheet metal, includes in- `Wardly extending V'collar portion 34 ofappreciable length 'so as to nest the upper end of tube 23 `and be suitably secured thereto as bysoldering or the like. The upper-end of the tube 23 thus fserves as ia stop lshoulderfda.

rThe upper vend'of cup "3-3 is slightly "enlarged as at 35 yt'oforma stop shoulder 36. PPress ntted thereinvis stator'laminations 3fI of-a single phase universal motor having yfield '38=and rotor-dlthe .1 latter "being .press tte'd llor lotherwise `secured to the yredm'eed upper end i4l) of shaft i211. `lll'ie =extreme `upper fend cf thes-shaf-tis fur-ther :reduced wat 4I and securedthereoneat is aceolingtfan :'-Aloup-like"frame member is. press'atted or otherwise :secured to "the stator and :its u central portion -45 vsupports a fsuitable `shaft bearing structure-*46 which may befsuppliedwitliglubri cant as at 41. Secured as at 43 to saidfrar'n'e yis -ithefinverted cup closure -49 :open'atthebottom forgpermitting :circula-tionoi fcooling air Aabout `the stator laminations 31 by the coolingfanf. `Bolts 50 4secure the cup 33 `and frame 4M-w45 together.

suitably fsec'ured to 'cup '33 yis 'bracket #5I f mounting "current supplynxturef 52 by' which `supply-lines '53 :are =introduced `to the motor. anti-friction fstructure '154 ispressttedzupnn the fshaftandriabuts shourdera=55 thereof. 4f1lhe11'exte- `rior :of l'such Uantifriction vclevi'c'e 'is "press ftted 'intolc'olla'r :341unti1 itabutsendiMaoi theftube A brace rod 56 is secured at 51 and 58 as by soldering or the like, to cup 33 and xture 2 I.

The resulting structure, accordingly, is of other than cast character, thus reducing machining costs to a minimum. The upper plate I6, brace 56, tube 23 and cup 33 when assembled comprise a single unit. After assembly of the upper portion,

55 the same has applied thereto the last mentioned unit. Then to the exposed end of the same is secured the impeller. Then the bottom plate I and top plate I6 are secured together by bolts 59. Y

While the invention has been illustrated and described in great detail in the drawings and foregoing descriptiomthe same is to be considered as illustrative and not restrictive inV character.

The several modifications described herein'as well as others which will readily suggest themselves to persons skilled in this art, all are considered lto be within'the broad scope of the invention, reference being had to the appendedclaims.

The invention claimed is: V

1. A motor driven pump comprising a cup shaped housing, a cap for the same, a tubular member depending from the cup and projecting a slight distance upwardly into the same, a collar interiorly of the lhousing'surrounding the aforesaid projection and projecting above same for bearing support purposes, a stator and rotor disposed in the housing, a shaft carrying the rotor and projecting from the housing to and through the tubular member, an antifriction device carried by the shaft below the rotor and bearing upon the top of the tubular member and nested within Ythe collar, a sheet metal partial pump housinghaving a scroll type passageway formed in the lower face thereof, a coaxial collar portionextending upwardly therefrom to receive and nest therein the lower end of 'said tubular member, a secondsheet metal partial housing having a complementaryand matching passageway formed therein, the partial housings being secured together at flanged peripheries and a bladed impeller in thel resulting pump housing and rigid with the lower end of the shaft, 'the pLunp housing having a lower coaxial-intake opening and an offset upper outlet opening.

2. A pump as dened by claim 1 wherein the lower end of said tubular member is restricted by` an'apertured cup member, the impeller having a plate portion disposed immediately contiguous to said cup member.

3. A pump as dened by claim 2 whereinl th impeller'oomprises a plate, said plate having blades stamped therefrom, and a shouldered hub, the shouldered portion of which is rigidly secured to said plate.

4. A pump as defined by claim 2 wherein the Voutlet opening is dened by an internally shoul- .for stator engagement, clamping meansfor securing said cups in stator 'clamping engagement, a depending elongated shaft supporting said rotor, an elongated tube supporting said motor housing on its upper end and through which said 4 I shaft extends, a sheet metal pump housing scured to the lower end of said tube, and an impeller rotatable in said housing secured to theV lower end of said shaft.

6. YIn a semi-submersible motor driven pump including an overhead motor comprising a stator and rotor, the combination therewith of a motor housing comprising a sheet metal cup having a lateral enlargement to provide a shoulder for seating' said stator, an inverted cup-like portion provided with an internal shoulder therein for stator engagement, clamping means for securing said cups in stator clamping engagement, a depending elongated shaft supporting said rotor,

an elongated tube supporting said motor housing on its upper end and through which said ,shaft extends, a sheet metal pump housing secured tothe lower end Yof said tube and an impeller rotatable in saicl housing secured to the lower end of said shaft, the upper end of said shaft projecting through the topY of the inverted kcup portion of said housing, and'a cooling fan secured to the upwardly projecting end ofsaid shaft.

7. In a semi-submersible motor driven pump including an overhead motor comprising a` stator and rotor, the combination therewith of a motor housing comprising a sheet metal cup having a lateral enlargement to provide ashoulder Vfor seating said stator, an inverted cup-like portion provided with an internal shoulder therein for stator engagement, clamping means for securing said cups in stator clamping engagement, a depending elongated shaft supporting said rotor,

f an elongated tube supporting said motor housing on its upper end and throughwhich said shaft extends, a sheetV metal pump housing vsecured to the lower end of said tube and im. impeller rotatable in said housing secured tothe lower end of said shaft, said pump housing having an inlet orifice and an outlet orice, and an angularly disposed bracing rod having its upper end secured tothe bottom of the first mentioned cup portion of said motor housing and its lower end secured to therupper portion of said pump housing for bracing said housings relative to each otherand to said tube.

' FRANCIS E. BRADY, J R.

REFERENCES CITED The following references are of record in th le of this patent: 'v

UNITED STATESV PATENTS Great Britain Mar. 7, 1929 

